Compression ratio vs Porting

I think in terms of the basic question - head flow will always trump compression. A combination of cam desigin and port flow can be done to equal minor static compression ratio increases. That's pretty much what a modern lobe does. In terms of your own heads - 3 angle is standard now, but a modern performance valve job is a 5 angle and is done using cutters - not stones and tapered pilots. At least that's my definition. If you do that, all you have to do is casting flash and blend the throat cut and you're done. That type of valve job, along with a back cut intake valve, can increase low and midlift flow considerably. Then just don't over cam it because high low lift flow will flow both ways and reversion an mixture dilution become a problem.